# Bob McElrath PhD.

> Bob McElrath, PhD, is a CERN-trained theoretical physicist, former lead wallet architect at Fidelity Digital Assets, and applied cryptography advisor at Auditchain Labs AG.

- Web page: https://auditchain.com/team/bob-mcelrath-phd/
- Role: Applied Cryptography - Full Stack Engineer
- Organisation: Auditchain Labs AG
- LinkedIn: https://www.linkedin.com/in/bobmcelrath/

Bob serves in the capacity of applied cryptography for Auditchain Labs AG.

Bob is a theoretical physicist having worked at CERN and authored over 30 papers on particle physics. He ran the BitDevs Whitepaper Wednesday meetup in New York City for several years which focused on the examination of cryptography papers.

Bob began working on Bitcoin in 2011. From 2015 to 2017 he served as the CTO of SolideX, the first company to file with the SEC for a spot Bitcoin ETF. From 2017 until 2020 he was the lead wallet architect for Fidelity Digital Assets as well as a member of their FCAT research lab. Bob has performed software development for a number of companies in the space including Custodia Bank.